Geotech engineers told Tauranga City Council 20 years ago buildings shouldn't be allowed in the "runout" zones of potential landslides, unless they had specially constructed protection.
WorkSafe says it will be looking into the organisations that had a duty of care for everyone at the Mt Maunganui holiday park, but for now the priority is on the recovery efforts.
Authorities have evacuated some households from Onepoto and parts of Te Araroa on the North Island's East Coast after significant landslide risks were identified.